<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.min.js"></script>
    <title>Document</title>
</head>


<body>
    <button class="btn">点我呀</button>
    <script>
        $('.btn').click(function() {
            $.ajax({
                url: 'http://localhost:8000/api/',
                type: 'POST',
                dataType: 'json',
                contentType: 'application/json',
                data: JSON.stringify({
                    user: "gavin"
                }),
                success: function(data) {
                    console.log(data)
                }
            })
        });
    </script>
</body>

</html>